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Inflections of 堅い

Common
Meaning
    1. hard; solid; tough
      esp. 固い and 堅い for wood, 硬い for metal and stone
      Boil the eggs hard.
    2. stiff; tight; wooden; unpolished (e.g. writing)
      This lid is so tight I can't open it.
    3. strong; firm (not viscous or easily moved)
      The frame of the machine should be rigid.
    4. safe; steady; honest; steadfast
    5. obstinate; stubborn
    6. bookish; formal; stuffy
      You don't have to be so formal.
    7. go (game)
      solid (shape or stones)
      Only applies to 堅い
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